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Copyright 1991 David Jurgens |
INT 15,89 - Switch Processor to Protected Mode
AH = 89h
BH = IRQ8 interrupt vector offset
BL = IRQ0 interrupt vector offset
CX = offset into protected mode CS to jump
ES:SI = pointer to Global Descriptor Table (GDT)
on return:
CF = 0 if successful
= 1 if error
- switches 286 and 386 machines into protected mode to take
advantage of advanced feature and extended memory
- Global descriptor table must be setup before interrupt
- normal BIOS functions are not available after the switch
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| Esc or Alt-X to exit |
int 15,89 |
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